Spinnova restarts Woodspin trial runs to boost wood-fiber production quality

Spinnova is back in the demo-factory phase, and this restart is less about romance than proof. At Woodspin in Jyväskylä, Finland, trial runs began on April 9 as the company tries to show that its wood-pulp technology can deliver the kind of consistent fiber quality, production efficiency and scale that brands and mills require before they commit.

The timing matters. Spinnova halted production at its demo factories after ending its joint venture agreement with Suzano in 2025, then took full ownership of Woodspin Oy and Suzano Finland Oy. The company says that ownership change clears the way for future technology licensing without restrictions, including for wood pulps, but the harder task is proving that the process works reliably when the machines are running for real, not just in pilot conditions.

That is why the current phase is so important. Spinnova says the trial runs are intended to validate technological solutions that were already proven at smaller pilot scale, with a particular focus on improving production efficiency and fibre quality. The company says it wants to proceed “step by step,” and aims to restart production on a larger scale during 2026 if the results justify it. In this business, that next step is the whole story: not a press release flourish, but repeatable output, stable quality and better economics.

The commercial backdrop is still bruised. Spinnova reported 2025 revenue of just €344,000, down from €762,000 in 2024, and its operating loss widened partly because of an €18.4 million impairment tied to the Woodspin venture. Suzano said in February 2025 that it would not invest in the next steps of collaboration, prompting Spinnova to launch a strategic review of Woodspin. Binding agreements to transfer full ownership of Woodspin Oy and Suzano Finland Oy were signed in August 2025.

Spinnova’s own annual report says production at the demo factories has been halted for the time being, which makes this restart feel like a hard reality check rather than a victory lap. The company’s updated strategy puts cost-efficiency, a broader raw-material base, better fibre properties and an international business consortium at the center of its next chapter.

For next-gen fiber to leave the lab, it has to survive the factory floor. If these trial runs produce steady quality, stronger yields and a cleaner route to industrial production, Spinnova will have something more valuable than hype: a case that wood fiber can earn its place in the supply chain.